fix admin menu indent

lib/views/admin/widget/menu.html

@@ -3,7 +3,7 @@
 {% endif  %}
 <ul class="nav nav-pills nav-stacked">
   <li class="{% if current == 'index'%}active{% endif %}"><a href="/admin"><i class="icon-fw icon-home"></i> {{ t('Management Wiki Home') }}</a></li>
-  <li class="{% if current == 'app'%}active{% endif %}"><a href="/admin/app"><i class="icon-fw icon-settings"></i>{{ t('App settings') }}</a></li>
+  <li class="{% if current == 'app'%}active{% endif %}"><a href="/admin/app"><i class="icon-fw icon-settings"></i> {{ t('App settings') }}</a></li>
   <li class="{% if current == 'security'%}active{% endif %}"><a href="/admin/security"><i class="icon-fw icon-shield"></i> {{ t('Security settings') }}</a></li>
   <li class="{% if current == 'markdown'%}active{% endif %}"><a href="/admin/markdown"><i class="icon-fw icon-note"></i> {{ t('Markdown settings') }}</a></li>
   <li class="{% if current == 'customize'%}active{% endif %}"><a href="/admin/customize"><i class="icon-fw icon-wrench"></i> {{ t('Customize') }}</a></li>